<template>
    <div class="app-container">
      <el-tabs tab-position="top" :value="processed === true ? 'approval' : 'form'">
  
        <el-tab-pane label="任务办理" name="approval" v-if="processed === true">
          <el-card class="box-card" shadow="hover" v-if="taskFormOpen">
            <div slot="header" class="clearfix">
              <span>填写表单</span>
            </div>
            <el-col :span="20" :offset="2">
              <parser :form-conf="taskFormData" ref="taskFormParser"/>
            </el-col>
          </el-card>
          <el-card class="box-card" shadow="hover">
            <div slot="header" class="clearfix">
              <span>审批流程</span>
            </div>
            <el-row>
              <el-col :span="20" :offset="2">
                <el-form ref="taskForm" :model="taskForm" :rules="rules" label-width="120px">
                  <el-form-item label="审批意见" prop="comment">
                    <el-input type="textarea" :rows="5" v-model="taskForm.comment" placeholder="请输入 审批意见" />
                  </el-form-item>
                  <el-form-item label="抄送人" prop="copyUserIds">
                    <el-tag
                      :key="index"
                      v-for="(item, index) in copyUser"
                      closable
                      :disable-transitions="false"
                      @close="handleClose('copy', item)">
                      {{ item.nickName }}
                    </el-tag>
                    <el-button class="button-new-tag" type="primary" icon="el-icon-plus" size="mini" circle @click="onSelectCopyUsers" />
                  </el-form-item>
                  <el-form-item label="指定审批人" prop="copyUserIds">
                    <el-tag
                      :key="index"
                      v-for="(item, index) in nextUser"
                      closable
                      :disable-transitions="false"
                      @close="handleClose('next', item)">
                      {{ item.nickName }}
                    </el-tag>
                    <el-button class="button-new-tag" type="primary" icon="el-icon-plus" size="mini" circle @click="onSelectNextUsers" />
                  </el-form-item>
                </el-form>
              </el-col>
            </el-row>
            <el-row :gutter="10" type="flex" justify="center" >
              <el-col :span="1.5">
                <el-button icon="el-icon-circle-check" type="success" @click="handleComplete">通过</el-button>
              </el-col>
              <el-col :span="1.5">
                <el-button icon="el-icon-chat-line-square" type="primary" @click="handleDelegate">委派</el-button>
              </el-col>
              <el-col :span="1.5">
                <el-button icon="el-icon-thumb" type="success" @click="handleTransfer">转办</el-button>
              </el-col>
              <el-col :span="1.5">
                <el-button icon="el-icon-refresh-left" type="warning" @click="handleReturn">退回</el-button>
              </el-col>
              <el-col :span="1.5">
                <el-button icon="el-icon-circle-close" type="danger" @click="handleReject">拒绝</el-button>
              </el-col>
            </el-row>
          </el-card>
        </el-tab-pane>
  
        <el-tab-pane label="表单信息" name="form">
          <div v-if="formOpen">
            <el-card class="box-card" shadow="never" v-for="(formInfo, index) in processFormList" :key="index">
              <div slot="header" class="clearfix">
                <span>{{ formInfo.title }}</span>
              </div>
              <!--流程处理表单模块-->
              <el-col :span="20" :offset="2">
                <parser :form-conf="formInfo"/>
              </el-col>
            </el-card>
          </div>
        </el-tab-pane >
  
        <el-tab-pane label="流转记录" name="record">
          <el-card class="box-card" shadow="never">
            <el-col :span="20" :offset="2">
              <div class="block">
                <el-timeline :reverse="true">
                  <el-timeline-item v-for="(item,index) in historyProcNodeList" :key="index" :icon="setIcon(item.endTime)" :color="setColor(item.endTime)">
                    <p style="font-weight: 700">{{ item.activityName }}</p>
                    <el-card v-if="item.activityType === 'startEvent'" class="box-card" shadow="hover">
                      {{ item.assigneeName }} 在 {{ item.createTime }} 发起{{ item.procName }}
                    </el-card>
                    <el-card v-if="item.activityType === 'userTask'" class="box-card" shadow="hover">
                      <el-descriptions :column="3" :labelStyle="{'font-weight': 'bold'}">
                        <el-descriptions-item label="审批人">{{ item.assigneeName || '-'}}</el-descriptions-item>
                        <el-descriptions-item label="办理时间">{{ item.endTime || '-' }}</el-descriptions-item>
                      </el-descriptions>
                      <div v-if="item.commentList && item.commentList.length > 0">
                        <div v-for="(comment, index) in item.commentList" :key="index">
                          <el-divider content-position="left">
                            <el-tag :type="approveTypeTag(comment.type)" size="mini">{{ commentType(comment.type) }}</el-tag>
                            <el-tag type="info" effect="plain" size="mini">{{ comment.time }}</el-tag>
                          </el-divider>
                          <span>{{ comment.fullMessage }}</span>
                        </div>
                      </div>
                    </el-card>
                    <el-card v-if="item.activityType === 'endEvent'" class="box-card" shadow="hover">
                      {{ item.createTime }} 结束流程
                    </el-card>
                  </el-timeline-item>
                </el-timeline>
              </div>
            </el-col>
          </el-card>
        </el-tab-pane>
  
        <el-tab-pane label="流程跟踪" name="track">
          <el-card class="box-card" shadow="never">
            <process-viewer :key="`designer-${loadIndex}`" :style="'height:' + height" :xml="xmlData"
                            :finishedInfo="finishedInfo" :allCommentList="historyProcNodeList"
            />
          </el-card>
        </el-tab-pane>
      </el-tabs>
  
      <!--退回流程-->
      <el-dialog :title="returnTitle" :visible.sync="returnOpen" width="40%" append-to-body>
        <el-form ref="taskForm" :model="taskForm" label-width="80px" >
          <el-form-item label="退回节点" prop="targetKey">
            <el-radio-group v-model="taskForm.targetKey">
              <el-radio-button
                v-for="item in returnTaskList"
                :key="item.id"
                :label="item.id"
              >{{item.name}}</el-radio-button>
            </el-radio-group>
          </el-form-item>
        </el-form>
        <span slot="footer" class="dialog-footer">
          <el-button @click="returnOpen = false">取 消</el-button>
          <el-button type="primary" @click="submitReturn">确 定</el-button>
        </span>
      </el-dialog>
  
      <el-dialog :title="userData.title" :visible.sync="userData.open" width="60%" append-to-body>
        <el-row type="flex" :gutter="20">
          <!--部门数据-->
          <el-col :span="5">
            <el-card shadow="never" style="height: 100%">
              <div slot="header">
                <span>部门列表</span>
              </div>
              <div class="head-container">
                <el-input v-model="deptName" placeholder="请输入部门名称" clearable size="small" prefix-icon="el-icon-search"/>
                <el-tree
                  :data="deptOptions"
                  :props="deptProps"
                  :expand-on-click-node="false"
                  :filter-node-method="filterNode"
                  ref="tree"
                  default-expand-all
                  @node-click="handleNodeClick"
                />
              </div>
            </el-card>
          </el-col>
          <el-col :span="18">
            <el-table ref="userTable"
                      :key="userData.type"
                      height="500"
                      v-loading="userLoading"
                      :data="userList"
                      highlight-current-row
                      @current-change="changeCurrentUser"
                      @selection-change="handleSelectionChange">
              <el-table-column v-if="userData.type === 'copy' || userData.type === 'next'" width="55" type="selection" />
              <el-table-column v-else width="30">
                <template slot-scope="scope">
                  <el-radio :label="scope.row.userId" v-model="currentUserId">{{''}}</el-radio>
                </template>
              </el-table-column>
              <el-table-column label="用户名" align="center" prop="nickName" />
              <el-table-column label="手机" align="center" prop="phonenumber" />
              <el-table-column label="部门" align="center" prop="dept.deptName" />
            </el-table>
            <pagination
              :total="total"
              :page.sync="queryParams.pageNum"
              :limit.sync="queryParams.pageSize"
              @pagination="getList"
            />
          </el-col>
        </el-row>
        <span slot="footer" class="dialog-footer">
          <el-button @click="userData.open = false">取 消</el-button>
          <el-button type="primary" @click="submitUserData">确 定</el-button>
        </span>
      </el-dialog>
    </div>
  </template>
  
  <script>
  import { detailProcess } from '@/api/workflow/process'
  import Parser from '@/utils/generator/parser'
  import { complete, delegate, transfer, rejectTask, returnList, returnTask } from '@/api/workflow/task'
  import { listUser, deptTreeSelect } from '@/api/system/user'
  import ProcessViewer from '@/components/ProcessViewer'
  import '@riophae/vue-treeselect/dist/vue-treeselect.css'
  import Treeselect from '@riophae/vue-treeselect'
  
  export default {
    name: "WorkDetail",
    components: {
      ProcessViewer,
      Parser,
      Treeselect
    },
    props: {},
    computed: {
      commentType() {
        return val => {
          switch (val) {
            case '1': return '通过'
            case '2': return '退回'
            case '3': return '驳回'
            case '4': return '委派'
            case '5': return '转办'
            case '6': return '终止'
            case '7': return '撤回'
          }
        }
      },
      approveTypeTag() {
        return val => {
          switch (val) {
            case '1': return 'success'
            case '2': return 'warning'
            case '3': return 'danger'
            case '4': return 'primary'
            case '5': return 'success'
            case '6': return 'danger'
            case '7': return 'info'
          }
        }
      }
    },
    data() {
      return {
        height: document.documentElement.clientHeight - 205 + 'px;',
        // 模型xml数据
        loadIndex: 0,
        xmlData: undefined,
        finishedInfo: {
          finishedSequenceFlowSet: [],
          finishedTaskSet: [],
          unfinishedTaskSet: [],
          rejectedTaskSet: []
        },
        historyProcNodeList: [],
        // 部门名称
        deptName: undefined,
        // 部门树选项
        deptOptions: undefined,
        userLoading: false,
        // 用户表格数据
        userList: null,
        deptProps: {
          children: "children",
          label: "label"
        },
        // 查询参数
        queryParams: {
          pageNum: 1,
          pageSize: 10,
          deptId: undefined
        },
        total: 0,
        // 遮罩层
        loading: true,
        taskForm:{
          comment:"", // 意见内容
          procInsId: "", // 流程实例编号
          taskId: "" ,// 流程任务编号
          copyUserIds: "", // 抄送人Id
          vars: "",
          targetKey:""
        },
        rules: {
          comment: [{ required: true, message: '请输入审批意见', trigger: 'blur' }],
        },
        currentUserId: null,
        variables: [], // 流程变量数据
        taskFormOpen: false,
        taskFormData: {}, // 流程变量数据
        processFormList: [], // 流程变量数据
        formOpen: false, // 是否加载流程变量数据
        returnTaskList: [],  // 回退列表数据
        processed: false,
        returnTitle: null,
        returnOpen: false,
        rejectOpen: false,
        rejectTitle: null,
        userData: {
          title: '',
          type: '',
          open: false,
        },
        copyUser: [],
        nextUser: [],
        userMultipleSelection: [],
        userDialogTitle: '',
        userOpen: false
      };
    },
    created() {
      this.initData();
    },
    methods: {
      initData() {
        this.taskForm.procInsId = this.$route.params && this.$route.params.procInsId;
        this.taskForm.taskId  = this.$route.query && this.$route.query.taskId;
        this.processed = this.$route.query && eval(this.$route.query.processed || false);
        // 流程任务重获取变量表单
        this.getProcessDetails(this.taskForm.procInsId, this.taskForm.taskId);
        this.loadIndex = this.taskForm.procInsId;
      },
      /** 查询部门下拉树结构 */
      getTreeSelect() {
        deptTreeSelect().then(response => {
          this.deptOptions = response.data;
        });
      },
      /** 查询用户列表 */
      getList() {
        this.userLoading = true;
        listUser(this.queryParams).then(response => {
          this.userList = response.rows;
          this.total = response.total;
          this.toggleSelection(this.userMultipleSelection);
          this.userLoading = false;
        });
      },
      // 筛选节点
      filterNode(value, data) {
        if (!value) return true;
        return data.label.indexOf(value) !== -1;
      },
      // 节点单击事件
      handleNodeClick(data) {
        this.queryParams.deptId = data.id;
        this.getList();
      },
      setIcon(val) {
        if (val) {
          return "el-icon-check";
        } else {
          return "el-icon-time";
        }
      },
      setColor(val) {
        if (val) {
          return "#2bc418";
        } else {
          return "#b3bdbb";
        }
      },
      // 多选框选中数据
      handleSelectionChange(selection) {
        this.userMultipleSelection = selection
      },
      toggleSelection(selection) {
        if (selection && selection.length > 0) {
          this.$nextTick(()=> {
            selection.forEach(item => {
              let row = this.userList.find(k => k.userId === item.userId);
              this.$refs.userTable.toggleRowSelection(row);
            })
          })
        } else {
          this.$nextTick(() => {
            this.$refs.userTable.clearSelection();
          });
        }
      },
      // 关闭标签
      handleClose(type, tag) {
        let userObj = this.userMultipleSelection.find(item => item.userId === tag.id);
        this.userMultipleSelection.splice(this.userMultipleSelection.indexOf(userObj), 1);
        if (type === 'copy') {
          this.copyUser = this.userMultipleSelection;
          // 设置抄送人ID
          if (this.copyUser && this.copyUser.length > 0) {
            const val = this.copyUser.map(item => item.id);
            this.taskForm.copyUserIds = val instanceof Array ? val.join(',') : val;
          } else {
            this.taskForm.copyUserIds = '';
          }
        } else if (type === 'next') {
          this.nextUser = this.userMultipleSelection;
          // 设置抄送人ID
          if (this.nextUser && this.nextUser.length > 0) {
            const val = this.nextUser.map(item => item.id);
            this.taskForm.nextUserIds = val instanceof Array ? val.join(',') : val;
          } else {
            this.taskForm.nextUserIds = '';
          }
        }
      },
      /** 流程变量赋值 */
      handleCheckChange(val) {
        if (val instanceof Array) {
          this.taskForm.values = {
            "approval": val.join(',')
          }
        } else {
          this.taskForm.values = {
            "approval": val
          }
        }
      },
      getProcessDetails(procInsId, taskId) {
        const params = {procInsId: procInsId, taskId: taskId}
        detailProcess(params).then(res => {
          const data = res.data;
          this.xmlData = data.bpmnXml;
          this.processFormList = data.processFormList;
          this.taskFormOpen = data.existTaskForm;
          if (this.taskFormOpen) {
            this.taskFormData = data.taskFormData;
          }
          this.historyProcNodeList = data.historyProcNodeList;
          this.finishedInfo = data.flowViewer;
          this.formOpen = true
        })
      },
      onSelectCopyUsers() {
        this.userMultipleSelection = this.copyUser;
        this.onSelectUsers('添加抄送人', 'copy')
      },
      onSelectNextUsers() {
        this.userMultipleSelection = this.nextUser;
        this.onSelectUsers('指定审批人', 'next')
      },
      onSelectUsers(title, type) {
        this.userData.title = title;
        this.userData.type = type;
        this.getTreeSelect();
        this.getList()
        this.userData.open = true;
      },
      /** 通过任务 */
      handleComplete() {
        // 校验表单
        const taskFormRef = this.$refs.taskFormParser;
        const isExistTaskForm = taskFormRef !== undefined;
        // 若无任务表单，则 taskFormPromise 为 true，即不需要校验
        const taskFormPromise = !isExistTaskForm ? true : new Promise((resolve, reject) => {
          taskFormRef.$refs[taskFormRef.formConfCopy.formRef].validate(valid => {
            valid ? resolve() : reject()
          })
        });
        const approvalPromise = new Promise((resolve, reject) => {
          this.$refs['taskForm'].validate(valid => {
            valid ? resolve() : reject()
          })
        });
        Promise.all([taskFormPromise, approvalPromise]).then(() => {
          if (isExistTaskForm) {
            this.taskForm.variables = taskFormRef[taskFormRef.formConfCopy.formModel]
          }
          complete(this.taskForm).then(response => {
            this.$modal.msgSuccess(response.msg);
            this.goBack();
          });
        })
      },
      /** 委派任务 */
      handleDelegate() {
        this.$refs["taskForm"].validate(valid => {
          if (valid) {
            this.userData.type = 'delegate';
            this.userData.title = '委派任务'
            this.userData.open = true;
            this.getTreeSelect();
          }
        })
      },
      /** 转办任务 */
      handleTransfer(){
        this.$refs["taskForm"].validate(valid => {
          if (valid) {
            this.userData.type = 'transfer';
            this.userData.title = '转办任务';
            this.userData.open = true;
            this.getTreeSelect();
          }
        })
      },
      /** 拒绝任务 */
      handleReject() {
        this.$refs["taskForm"].validate(valid => {
          if (valid) {
            const _this = this;
            this.$modal.confirm('拒绝审批单流程会终止，是否继续？').then(function() {
              return rejectTask(_this.taskForm);
            }).then(res => {
              this.$modal.msgSuccess(res.msg);
              this.goBack();
            });
          }
        });
      },
      changeCurrentUser(val) {
        this.currentUserId = val.userId
      },
      /** 返回页面 */
      goBack() {
        // 关闭当前标签页并返回上个页面
        this.$tab.closePage(this.$route)
        this.$router.back()
      },
      /** 接收子组件传的值 */
      getData(data) {
        if (data) {
          const variables = [];
          data.fields.forEach(item => {
            let variableData = {};
            variableData.label = item.__config__.label
            // 表单值为多个选项时
            if (item.__config__.defaultValue instanceof Array) {
              const array = [];
              item.__config__.defaultValue.forEach(val => {
                array.push(val)
              })
              variableData.val = array;
            } else {
              variableData.val = item.__config__.defaultValue
            }
            variables.push(variableData)
          })
          this.variables = variables;
        }
      },
      submitUserData() {
        let type = this.userData.type;
        if (type === 'copy' || type === 'next') {
          if (!this.userMultipleSelection || this.userMultipleSelection.length <= 0) {
            this.$modal.msgError("请选择用户");
            return false;
          }
          let userIds = this.userMultipleSelection.map(k => k.userId);
          if (type === 'copy') {
            // 设置抄送人ID信息
            this.copyUser = this.userMultipleSelection;
            this.taskForm.copyUserIds = userIds instanceof Array ? userIds.join(',') : userIds;
          } else if (type === 'next') {
            // 设置下一级审批人ID信息
            this.nextUser = this.userMultipleSelection;
            this.taskForm.nextUserIds = userIds instanceof Array ? userIds.join(',') : userIds;
          }
          this.userData.open = false;
        } else {
          if (!this.taskForm.comment) {
            this.$modal.msgError("请输入审批意见");
            return false;
          }
          if (!this.currentUserId) {
            this.$modal.msgError("请选择用户");
            return false;
          }
          this.taskForm.userId = this.currentUserId;
          if (type === 'delegate') {
            delegate(this.taskForm).then(res => {
              this.$modal.msgSuccess(res.msg);
              this.goBack();
            });
          }
          if (type === 'transfer') {
            transfer(this.taskForm).then(res => {
              this.$modal.msgSuccess(res.msg);
              this.goBack();
            });
          }
        }
  
      },
      /** 可退回任务列表 */
      handleReturn() {
        this.$refs['taskForm'].validate(valid => {
          if (valid) {
            this.returnTitle = "退回流程";
            returnList(this.taskForm).then(res => {
              this.returnTaskList = res.data;
              this.taskForm.values = null;
              this.returnOpen = true;
            })
          }
        });
  
      },
      /** 提交退回任务 */
      submitReturn() {
        this.$refs["taskForm"].validate(valid => {
          if (valid) {
            if (!this.taskForm.targetKey) {
              this.$modal.msgError("请选择退回节点！");
            }
            returnTask(this.taskForm).then(res => {
              this.$modal.msgSuccess(res.msg);
              this.goBack()
            });
          }
        });
      }
    }
  };
  </script>
  <style lang="scss" scoped>
  .clearfix:before,
  .clearfix:after {
    display: table;
    content: "";
  }
  .clearfix:after {
    clear: both
  }
  
  .box-card {
    width: 100%;
    margin-bottom: 20px;
  }
  
  .el-tag + .el-tag {
    margin-left: 10px;
  }
  
  .el-row {
    margin-bottom: 20px;
    &:last-child {
      margin-bottom: 0;
    }
  }
  .el-col {
    border-radius: 4px;
  }
  
  .button-new-tag {
    margin-left: 10px;
  }
  </style>
  